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Financial Statement Details - Summary of Accrued Warranty Obligations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]    
Accrued warranty obligations at beginning of period $ 932 $ 1,196
Additions charged to operations 821 1,090
Deductions from liability (1,262) (1,354)
Effect of change in foreign currency exchange rates (11) 0
Accrued warranty obligations at end of period $ 480 $ 932